Each learning path is one chapter: a guided route through a topic, one small course at a time. Pick a class to see its chapters in order.
A spoonful of curd, a loaf of bread, a bottle of juice and the gas in a village kitchen all depend on microbes that nobody can see. This chapter shows the helpful side of the living world that is too small to see. You learn what the microbes do in the food of the home and in the factory, how a sewage works cleans the water of a city, how cow dung becomes fuel, and how bacteria, fungi and viruses protect crops and feed the soil. Python counts gas, oxygen demand and nitrogen. It covers the unit of the Indian syllabus (NCERT, NEET) and the matching topics of A-Level, IB and AP Biology.